ServiceNow Certified System Administration Practice

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What is another name for the 32-character GUID?

Unique Identifier
Record Identifier
Object ID
Reference Key

The correct answer is: Unique Identifier

The 32-character GUID, often referred to as a Unique Identifier, serves a fundamental purpose in databases and applications, including ServiceNow. This unique key is generated to ensure that each record or entity can be distinctly identified, regardless of the data it contains. The uniqueness provided by the GUID eliminates any ambiguity or conflicts that may arise from using simpler, non-unique identifiers such as sequential numbers or names that could potentially repeat. GUIDs are especially significant in large systems and distributed applications where multiple records are created concurrently, ensuring that no two records share the same identifier. This property is critical for maintaining data integrity and enabling efficient record retrieval and manipulation. While other terms may relate to unique identification within various contexts, "Unique Identifier" specifically encapsulates the essence of the GUID's role in being a distinct and exclusive key within the system.